Stream Processing and Analytics Vasiliki (Vasia) Kalavri
 vkalavri@bu.edu Spring 2020 4/09: Flow control and load shedding ??? Vasiliki Kalavri | Boston University 2020 Keeping up with the producers what if the queue grows larger than available memory? • block the producer (back-pressure, flow control) 2 ??? Vasiliki Kalavri | Boston University 2020 Load management approaches 3 ! Load shedder runtime and selectively drops tuples according to a QoS specification. • Similar to congestion control or video streaming in a lower quality. 4 ??? Vasiliki Kalavri | Boston University 2020 https://commons

certificates, provides workload identity, and includes a builtin authorization system facilitated by its control plane. The goal of the assessment was to identify security issues related to the Istio code base and outbound access of Istio services. • Istio Envoy Usage: The configuration and implemen- tation of Envoy within Istio (NOTE: Envoy itself was not part of the assessment). • Istio Control Plane: Istio Istio operator, side car injector, and other Istio control plane services • Istio Documentation: The documentation and secu- rity guides hosted on istio.io. NCC Group started the assessment with an overall

properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 4.8 Guest control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 4.9 Memory overcommitment . 198 9.9.2 Configuring the hard disk vendor product data (VPD) . . . . . . . . . . 200 9.9.3 Access iSCSI targets via Internal Networking . . . . . . . . . . . . . . . 200 9.10 Legacy commands for Watchdog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220 9.22.1 Memory ballooning control . . . . . . . . . . . . . . . . . . . . . . . . . 220 9.22.2 Host isolation detection . . . . .

properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 4.8 Guest control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 4.9 Memory overcommitment . 198 9.9.2 Configuring the hard disk vendor product data (VPD) . . . . . . . . . . 200 9.9.3 Access iSCSI targets via Internal Networking . . . . . . . . . . . . . . . 200 9.10 Legacy commands for Watchdog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220 9.22.1 Memory ballooning control . . . . . . . . . . . . . . . . . . . . . . . . . 220 9.22.2 Host isolation detection . . . . .

properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 4.8 Guest control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 4.9 Memory overcommitment . 198 9.9.2 Configuring the hard disk vendor product data (VPD) . . . . . . . . . . 200 9.9.3 Access iSCSI targets via Internal Networking . . . . . . . . . . . . . . . 200 9.10 Legacy commands for Watchdog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220 9.22.1 Memory ballooning control . . . . . . . . . . . . . . . . . . . . . . . . . 220 9.22.2 Host isolation detection . . . . .

properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 4.8 Guest control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 4.9 Memory overcommitment . 198 9.9.2 Configuring the hard disk vendor product data (VPD) . . . . . . . . . . 200 9.9.3 Access iSCSI targets via Internal Networking . . . . . . . . . . . . . . . 200 9.10 Legacy commands for Watchdog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220 9.22.1 Memory ballooning control . . . . . . . . . . . . . . . . . . . . . . . . . 220 9.22.2 Host isolation detection . . . . .

properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 4.8 Guest control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 4.9 Memory overcommitment . 199 9.9.2 Configuring the hard disk vendor product data (VPD) . . . . . . . . . . 201 9.9.3 Access iSCSI targets via Internal Networking . . . . . . . . . . . . . . . 201 9.10 Legacy commands for Watchdog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221 9.22.1 Memory ballooning control . . . . . . . . . . . . . . . . . . . . . . . . . 221 9.22.2 Host isolation detection . . . . .

properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 4.8 Guest control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 4.9 Memory overcommitment . 185 9.9.2 Configuring the hard disk vendor product data (VPD) . . . . . . . . . . 187 9.9.3 Access iSCSI targets via Internal Networking . . . . . . . . . . . . . . . 187 9.10 Legacy commands for Watchdog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206 9.22.1 Memory ballooning control . . . . . . . . . . . . . . . . . . . . . . . . . 207 9.22.2 Host isolation detection . . . . .

properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 4.8 Guest control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 3 Contents 4.9 Memory . 206 9.9.2 Configuring the hard disk vendor product data (VPD) . . . . . . . . . . 208 9.9.3 Access iSCSI targets via Internal Networking . . . . . . . . . . . . . . . 208 9.10 Legacy commands for Watchdog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228 9.22.1 Memory ballooning control . . . . . . . . . . . . . . . . . . . . . . . . . 228 9.22.2 Host isolation detection . . . . .

properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 4.8 Guest control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 4.9 Memory overcommitment . 186 9.9.2 Configuring the hard disk vendor product data (VPD) . . . . . . . . . . 188 9.9.3 Access iSCSI targets via Internal Networking . . . . . . . . . . . . . . . 188 9.10 Legacy commands for Watchdog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207 9.22.1 Memory ballooning control . . . . . . . . . . . . . . . . . . . . . . . . . 208 9.22.2 Host isolation detection . . . . .